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Anyone know why memory on a Dual GPU Card such as a 295X2 or a Titan-Z can't be shared by both GPU's? Do you think this issue will be resolved in future hardware?
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Dual GPU Cards & Memory Access
- Thread starter markus1138
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It's because both GPU's are working on different frames (mostly) or small parts of a large frame so they both need access to all the assets in their VRAM to be able to render the page.
If it could be solved.. Well, they could use a shared pool of memory but that halves effective memory bandwidth and causes big coherency headaches so I'd bet the current setup is much much preferred.
If it could be solved.. Well, they could use a shared pool of memory but that halves effective memory bandwidth and causes big coherency headaches so I'd bet the current setup is much much preferred.
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Thanks for the explanation, seems as though separate frame buffers are here to stay!